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Campomanesia aurea is a sub-shrub species native to the Pampa Biome, popularly known as “guabirobinha-do-campo”. It has an ornamental potential for use in pots or gardens due to its small size, irregular shape, intense flowering and aroma. One of the main factors for production is an adequate use of fertilizers and balanced fertilizations. The objective was to evaluate the growth of seedlings and nutrient leaf accumulation of C. aurea submitted to doses of controlled release fertilizer (CRF). C. aurea seedlings were transplanted to containers containing composted pinus bark and CRF doses of 0, 2.5, 5.0, 7.5 and 10.0 g L−1. Height, chlorophyll index, number of stems, base diameter, leaf area, Dickson Quality Index, shoot dry matter, root dry matter and nutrient leaf accumulation were evaluated. For height, base diameter and number of stems, the point of maximum response was at the concentration 6.8, 6.6 and 6.9 g L−1 CRF, respectively. For shoot dry matter, leaf area and chlorophyll, we verified increase up to the concentration 8.1, 7.8 and 8.0 g L−1, respectively. There was a positive quadratic behavior for most nutrients, with the exception of Cu and Mn, which linearly increased with the increase of fertilizer dose. The application of CRF on C. aurea seedlings between 7 and 8 g L−1 substrate promoted an increase on the main growth characteristics of ornamental importance and provides superior results on nutrient leaf content. Resumo Campomanesia aurea é uma espécie sub-arbustiva nativa do Bioma Pampa, conhecida popularmente com guabirobinha-do-campo. Apresenta potencial ornamental para uso em vasos ou jardins devido ao seu pequeno tamanho, forma irregular, floração intensa e aromática. Um dos principais fatores para a produção é o uso adequado de fertilizantes e adubações equilibradas. O objetivo foi avaliar o crescimento de mudas e o conteúdo de nutrientes nas folhas de C. aurea submentidas a doses de fertilizante de liberação controlada (FLC). Mudas de C. aurea foram transplantadas para embalagens contendo casca de pinus compostada e as dose de FLC de: 0; 2,5; 5,0; 7,5 e 10,0 g L−1. Avaliou-se a altura, índice de clorofila, número de ramificações, diâmetro de colo, área foliar, Índice de Qualidade de Dickson, massa seca da parte aérea, massa seca de raiz e acúmulo de nutrientes nas folhas. Para altura, diâmetro de coleto, número de hastes, o ponto de máxima resposta foi com a concentração de 6,8; 6,6; e 6,9 g L−1 de FLC, respectivamente. Para a massa seca da parte aérea, área foliar e índice de clorofila verificaram-se aumentos até a concentração 8,1; 7,8 e 8,0 g L−1, respectivamente. Houve comportamento quadrático positivo para a maioria dos nutrientes, com exceção de Cu e Mn, que foi linear crescente com o aumento da dose de fertilizante. A aplicação de FLC em mudas de C. aurea entre 7 e 8 g de substrato L−1 promoveu um aumento nas principais características de crescimento de importância ornamental e proporciona resultados superiores no acúmulo de nutrientes nas folhas.

Angelonia integerrima Sprengel is a native species of the state of Mato Grosso do Sul and the Southern region (Paraná, Santa Catarina and Rio Grande do Sul) of Brazil, with features such as an unusual appearance and color of the flowers, indicating an ornamental use. To optimize the use of this species and to fill in gaps regarding its cytogenetic characterization, this study determined the chromosome number, meiotic index and pollen viability of plant individuals of four A. integerrima populations. All plant individuals of the four populations had 2n = 20 chromosomes. Still, the meiotic index of most analyzed plant individuals exceeded 90%, while pollen viability of all plant individuals was higher than 80%. These data suggest considerable cytological stability of the analyzed A. integerrima plant individuals, which may favor the selection of future genotypes for commercial purposes or their use in conservation and breeding programs of the species.